Covering for steam-pipes



(No Model.)

E. H. ASHCROFT. Covering for Steam Pipes.

No. 235,846. Patented Dec. 28,1880.-

N. PEFERS. PHOTWLITHDGRAPHER. WASHINGTON. D C.

UNITED STATES PATENT OFFICE.

EDWARD H. ASHCROFT, OF LYNN, MASSACHUSETTS.

COVERING FOR STEAM-Pl PES.

SPECIFICATION formingpart of Letters Patent No. 235,846, dated-December28, 1880.

Application filed November 1, 1880. (No model.)

To all whom it may concern): 7

Be it known that I, EDWARD H. ASHCROFT,

of Lynn, Massachusetts, have invented a new and useful ImprovementinGoveringfor Steam- Pipes; and I do hereby declare that the following isa full, clear, and exact description thereof, reference being had to theaccompanying drawings, forming a part of this specification, in Which-Figure 1 is a central longitudinal section, and Fig. 2 a transversesection, of a pipe embodying my invention.

Similar letters of reference indicate corresponding parts in the severalfigures. 1 The object of my invention is to prevent the condensation ofsteam in its passage through conducting -pipes, particularly streetmainsthat are laid under ground.

The invention consists in covering the pipes with animal hair or otheranalogous substance and securing the same within a protecting casin gprovided with coupling-flanges, as hereinafter particularly described.

In the accompanying drawings, arepresents a length of pipe fitted withscrew-coupling flanges b b at its opposite ends; 0, a rigid cylindricalcasing connected with the respective flanges b b, and d the interposedcovering material. The flanges b b are provided with annular grooves 17t, to receive the ends of the casing and a packing of lead or cement tosecure and seal the same, and thereby form a Water-tight joint.

The casing c is preferably made in the form of a hollow cylinder ofsheet metal; but any 5 other suitable material may be substituted thatwill confine the covering material, and which may be made in sectionalpartssuch as longitudinal strips, circumferential hoops, or otherframe-worlc-the whole, when connected together, being coated with aplastic cement, as shown at h..

The covering material should be properly cured or dried, and may beapplied in any desired thickness, but's'hould fill the intermediatespace between the pipe and exterior casing.

The construction and the method of connecting therespective partstogether, as shown, will enable the manufacturer to cover and completeeach length of pipe, so that it may be transported ready for laying.

Having thus fully described my invention, I claim I l. A covering for asteam-conducting pipe, consisting of animal hair or other analogousmaterial inclosed within a surrounding casing or frame-work and theconnected couplingflanges, and with or Without an exterior coating ofplastic cement, substantially as described.

2. The pipe a, provided with the adjustable coupling-flanges b b, having the annular grooves *5 i, the connected casing c, and an interposedcovering material, substantially as described.

EDWARD H. ASHGROFT.

Witnesses:

F. T. TAPLEY, O. L. BACON.

